projects / mesa.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
xlib: shortcircuit no-op makecurrent
[mesa.git] / src / gallium / winsys / xlib / fakeglx.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.1
4 *
5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 /*
27 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
28 * to run on X servers which do not have the real GLX extension.
29 *
30 * Thanks to the contributors:
31 *
32 * Initial version: Philip Brown (phil@bolthole.com)
33 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
34 * Further visual-handling refinements: Wolfram Gloger
35 * (wmglo@Dent.MED.Uni-Muenchen.DE).
36 *
37 * Notes:
38 * Don't be fooled, stereo isn't supported yet.
39 */
40
41
42
43 #include "glxheader.h"
44 #include "glxapi.h"
45 #include "GL/xmesa.h"
46 #include "context.h"
47 #include "config.h"
48 #include "macros.h"
49 #include "imports.h"
50 #include "mtypes.h"
51 #include "version.h"
52 #include "xfonts.h"
53 #include "xmesaP.h"
54 #include "state_tracker/st_context.h"
55 #include "state_tracker/st_public.h"
56
57
58 #ifdef __VMS
59 #define _mesa_sprintf sprintf
60 #endif
61
62 /* This indicates the client-side GLX API and GLX encoder version. */
63 #define CLIENT_MAJOR_VERSION 1
64 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
65
66 /* This indicates the server-side GLX decoder version.
67 * GLX 1.4 indicates OpenGL 1.3 support
68 */
69 #define SERVER_MAJOR_VERSION 1
70 #define SERVER_MINOR_VERSION 4
71
72 /* This is appended onto the glXGetClient/ServerString version strings. */
73 #define MESA_GLX_VERSION "Mesa " MESA_VERSION_STRING
74
75 /* Who implemented this GLX? */
76 #define VENDOR "Brian Paul"
77
78 #define EXTENSIONS \
79 "GLX_MESA_set_3dfx_mode " \
80 "GLX_MESA_copy_sub_buffer " \
81 "GLX_MESA_pixmap_colormap " \
82 "GLX_MESA_release_buffers " \
83 "GLX_ARB_get_proc_address " \
84 "GLX_EXT_texture_from_pixmap " \
85 "GLX_EXT_visual_info " \
86 "GLX_EXT_visual_rating " \
87 /*"GLX_SGI_video_sync "*/ \
88 "GLX_SGIX_fbconfig " \
89 "GLX_SGIX_pbuffer "
90
91 /*
92 * Our fake GLX context will contain a "real" GLX context and an XMesa context.
93 *
94 * Note that a pointer to a __GLXcontext is a pointer to a fake_glx_context,
95 * and vice versa.
96 *
97 * We really just need this structure in order to make the libGL functions
98 * glXGetCurrentContext(), glXGetCurrentDrawable() and glXGetCurrentDisplay()
99 * work correctly.
100 */
101 struct fake_glx_context {
102 __GLXcontext glxContext; /* this MUST be first! */
103 XMesaContext xmesaContext;
104 };
105
106
107
108 /**********************************************************************/
109 /*** GLX Visual Code ***/
110 /**********************************************************************/
111
112 #define DONT_CARE -1
113
114
115 static XMesaVisual *VisualTable = NULL;
116 static int NumVisuals = 0;
117
118
119 /*
120 * This struct and some code fragments borrowed
121 * from Mark Kilgard's GLUT library.
122 */
123 typedef struct _OverlayInfo {
124 /* Avoid 64-bit portability problems by being careful to use
125 longs due to the way XGetWindowProperty is specified. Note
126 that these parameters are passed as CARD32s over X
127 protocol. */
128 unsigned long overlay_visual;
129 long transparent_type;
130 long value;
131 long layer;
132 } OverlayInfo;
133
134
135
136 /* Macro to handle c_class vs class field name in XVisualInfo struct */
137 #if defined(__cplusplus) || defined(c_plusplus)
138 #define CLASS c_class
139 #else
140 #define CLASS class
141 #endif
142
143
144
145 /*
146 * Test if the given XVisualInfo is usable for Mesa rendering.
147 */
148 static GLboolean
149 is_usable_visual( XVisualInfo *vinfo )
150 {
151 switch (vinfo->CLASS) {
152 case StaticGray:
153 case GrayScale:
154 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
155 return GL_TRUE;
156 case StaticColor:
157 case PseudoColor:
158 /* Any StaticColor/PseudoColor visual of at least 4 bits */
159 if (vinfo->depth>=4) {
160 return GL_TRUE;
161 }
162 else {
163 return GL_FALSE;
164 }
165 case TrueColor:
166 case DirectColor:
167 /* Any depth of TrueColor or DirectColor works in RGB mode */
168 return GL_TRUE;
169 default:
170 /* This should never happen */
171 return GL_FALSE;
172 }
173 }
174
175
176
177 /**
178 * Get an array OverlayInfo records for specified screen.
179 * \param dpy the display
180 * \param screen screen number
181 * \param numOverlays returns numver of OverlayInfo records
182 * \return pointer to OverlayInfo array, free with XFree()
183 */
184 static OverlayInfo *
185 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
186 {
187 Atom overlayVisualsAtom;
188 Atom actualType;
189 Status status;
190 unsigned char *ovInfo;
191 unsigned long sizeData, bytesLeft;
192 int actualFormat;
193
194 /*
195 * The SERVER_OVERLAY_VISUALS property on the root window contains
196 * a list of overlay visuals. Get that list now.
197 */
198 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
199 if (overlayVisualsAtom == None) {
200 return 0;
201 }
202
203 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
204 overlayVisualsAtom, 0L, (long) 10000, False,
205 overlayVisualsAtom, &actualType, &actualFormat,
206 &sizeData, &bytesLeft,
207 &ovInfo);
208
209 if (status != Success || actualType != overlayVisualsAtom ||
210 actualFormat != 32 || sizeData < 4) {
211 /* something went wrong */
212 XFree((void *) ovInfo);
213 *numOverlays = 0;
214 return NULL;
215 }
216
217 *numOverlays = sizeData / 4;
218 return (OverlayInfo *) ovInfo;
219 }
220
221
222
223 /**
224 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
225 * Input: dpy - the X display
226 * vinfo - the XVisualInfo to test
227 * Return: level of the visual:
228 * 0 = normal planes
229 * >0 = overlay planes
230 * <0 = underlay planes
231 */
232 static int
233 level_of_visual( Display *dpy, XVisualInfo *vinfo )
234 {
235 OverlayInfo *overlay_info;
236 int numOverlaysPerScreen, i;
237
238 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
239 if (!overlay_info) {
240 return 0;
241 }
242
243 /* search the overlay visual list for the visual ID of interest */
244 for (i = 0; i < numOverlaysPerScreen; i++) {
245 const OverlayInfo *ov = overlay_info + i;
246 if (ov->overlay_visual == vinfo->visualid) {
247 /* found the visual */
248 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
249 int level = ov->layer;
250 XFree((void *) overlay_info);
251 return level;
252 }
253 else {
254 XFree((void *) overlay_info);
255 return 0;
256 }
257 }
258 }
259
260 /* The visual ID was not found in the overlay list. */
261 XFree((void *) overlay_info);
262 return 0;
263 }
264
265
266
267
268 /*
269 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
270 * configuration in our list of GLX visuals.
271 */
272 static XMesaVisual
273 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
274 GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag,
275 GLboolean stereoFlag,
276 GLint depth_size, GLint stencil_size,
277 GLint accumRedSize, GLint accumGreenSize,
278 GLint accumBlueSize, GLint accumAlphaSize,
279 GLint level, GLint numAuxBuffers )
280 {
281 GLboolean ximageFlag = GL_TRUE;
282 XMesaVisual xmvis;
283 GLint i;
284 GLboolean comparePointers;
285
286 if (dbFlag) {
287 /* Check if the MESA_BACK_BUFFER env var is set */
288 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
289 if (backbuffer) {
290 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
291 ximageFlag = GL_FALSE;
292 }
293 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
294 ximageFlag = GL_TRUE;
295 }
296 else {
297 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
298 }
299 }
300 }
301
302 if (stereoFlag) {
303 /* stereo not supported */
304 return NULL;
305 }
306
307 /* Comparing IDs uses less memory but sometimes fails. */
308 /* XXX revisit this after 3.0 is finished. */
309 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
310 comparePointers = GL_TRUE;
311 else
312 comparePointers = GL_FALSE;
313
314 /* Force the visual to have an alpha channel */
315 if (rgbFlag && _mesa_getenv("MESA_GLX_FORCE_ALPHA"))
316 alphaFlag = GL_TRUE;
317
318 /* First check if a matching visual is already in the list */
319 for (i=0; i<NumVisuals; i++) {
320 XMesaVisual v = VisualTable[i];
321 if (v->display == dpy
322 && v->mesa_visual.level == level
323 && v->mesa_visual.numAuxBuffers == numAuxBuffers
324 && v->ximage_flag == ximageFlag
325 && v->mesa_visual.rgbMode == rgbFlag
326 && v->mesa_visual.doubleBufferMode == dbFlag
327 && v->mesa_visual.stereoMode == stereoFlag
328 && (v->mesa_visual.alphaBits > 0) == alphaFlag
329 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
330 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
331 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
332 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
333 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
334 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
335 /* now either compare XVisualInfo pointers or visual IDs */
336 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
337 || (comparePointers && v->vishandle == vinfo)) {
338 return v;
339 }
340 }
341 }
342
343 /* Create a new visual and add it to the list. */
344
345 xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag,
346 stereoFlag, ximageFlag,
347 depth_size, stencil_size,
348 accumRedSize, accumBlueSize,
349 accumBlueSize, accumAlphaSize, 0, level,
350 GLX_NONE_EXT );
351 if (xmvis) {
352 /* Save a copy of the pointer now so we can find this visual again
353 * if we need to search for it in find_glx_visual().
354 */
355 xmvis->vishandle = vinfo;
356 /* Allocate more space for additional visual */
357 VisualTable = (XMesaVisual *) _mesa_realloc( VisualTable,
358 sizeof(XMesaVisual) * NumVisuals,
359 sizeof(XMesaVisual) * (NumVisuals + 1));
360 /* add xmvis to the list */
361 VisualTable[NumVisuals] = xmvis;
362 NumVisuals++;
363 /* XXX minor hack, because XMesaCreateVisual doesn't support an
364 * aux buffers parameter.
365 */
366 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
367 }
368 return xmvis;
369 }
370
371
372 /**
373 * Return the default number of bits for the Z buffer.
374 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
375 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
376 * XXX probably do the same thing for stencil, accum, etc.
377 */
378 static GLint
379 default_depth_bits(void)
380 {
381 int zBits;
382 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
383 if (zEnv)
384 zBits = _mesa_atoi(zEnv);
385 else
386 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
387 return zBits;
388 }
389
390 static GLint
391 default_alpha_bits(void)
392 {
393 int aBits;
394 const char *aEnv = _mesa_getenv("MESA_GLX_ALPHA_BITS");
395 if (aEnv)
396 aBits = _mesa_atoi(aEnv);
397 else
398 aBits = 0;
399 return aBits;
400 }
401
402 static GLint
403 default_accum_bits(void)
404 {
405 return 16;
406 }
407
408
409
410 /*
411 * Create a GLX visual from a regular XVisualInfo.
412 * This is called when Fake GLX is given an XVisualInfo which wasn't
413 * returned by glXChooseVisual. Since this is the first time we're
414 * considering this visual we'll take a guess at reasonable values
415 * for depth buffer size, stencil size, accum size, etc.
416 * This is the best we can do with a client-side emulation of GLX.
417 */
418 static XMesaVisual
419 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
420 {
421 int vislevel;
422 GLint zBits = 24; /*default_depth_bits();*/
423 GLint accBits = default_accum_bits();
424 GLboolean alphaFlag = default_alpha_bits() > 0;
425
426 vislevel = level_of_visual( dpy, visinfo );
427 if (vislevel) {
428 /* Configure this visual as a CI, single-buffered overlay */
429 return save_glx_visual( dpy, visinfo,
430 GL_FALSE, /* rgb */
431 GL_FALSE, /* alpha */
432 GL_FALSE, /* double */
433 GL_FALSE, /* stereo */
434 0, /* depth bits */
435 0, /* stencil bits */
436 0,0,0,0, /* accum bits */
437 vislevel, /* level */
438 0 /* numAux */
439 );
440 }
441 else if (is_usable_visual( visinfo )) {
442 if (_mesa_getenv("MESA_GLX_FORCE_CI")) {
443 /* Configure this visual as a COLOR INDEX visual. */
444 return save_glx_visual( dpy, visinfo,
445 GL_FALSE, /* rgb */
446 GL_FALSE, /* alpha */
447 GL_TRUE, /* double */
448 GL_FALSE, /* stereo */
449 zBits,
450 STENCIL_BITS,
451 0, 0, 0, 0, /* accum bits */
452 0, /* level */
453 0 /* numAux */
454 );
455 }
456 else {
457 /* Configure this visual as RGB, double-buffered, depth-buffered. */
458 /* This is surely wrong for some people's needs but what else */
459 /* can be done? They should use glXChooseVisual(). */
460 return save_glx_visual( dpy, visinfo,
461 GL_TRUE, /* rgb */
462 alphaFlag, /* alpha */
463 GL_TRUE, /* double */
464 GL_FALSE, /* stereo */
465 zBits,
466 STENCIL_BITS,
467 accBits, /* r */
468 accBits, /* g */
469 accBits, /* b */
470 accBits, /* a */
471 0, /* level */
472 0 /* numAux */
473 );
474 }
475 }
476 else {
477 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
478 return NULL;
479 }
480 }
481
482
483
484 /*
485 * Find the GLX visual associated with an XVisualInfo.
486 */
487 static XMesaVisual
488 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
489 {
490 int i;
491
492 /* try to match visual id */
493 for (i=0;i<NumVisuals;i++) {
494 if (VisualTable[i]->display==dpy
495 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
496 return VisualTable[i];
497 }
498 }
499
500 /* if that fails, try to match pointers */
501 for (i=0;i<NumVisuals;i++) {
502 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
503 return VisualTable[i];
504 }
505 }
506
507 return NULL;
508 }
509
510
511
512 /**
513 * Return the transparent pixel value for a GLX visual.
514 * Input: glxvis - the glx_visual
515 * Return: a pixel value or -1 if no transparent pixel
516 */
517 static int
518 transparent_pixel( XMesaVisual glxvis )
519 {
520 Display *dpy = glxvis->display;
521 XVisualInfo *vinfo = glxvis->visinfo;
522 OverlayInfo *overlay_info;
523 int numOverlaysPerScreen, i;
524
525 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
526 if (!overlay_info) {
527 return -1;
528 }
529
530 for (i = 0; i < numOverlaysPerScreen; i++) {
531 const OverlayInfo *ov = overlay_info + i;
532 if (ov->overlay_visual == vinfo->visualid) {
533 /* found it! */
534 if (ov->transparent_type == 0) {
535 /* type 0 indicates no transparency */
536 XFree((void *) overlay_info);
537 return -1;
538 }
539 else {
540 /* ov->value is the transparent pixel */
541 XFree((void *) overlay_info);
542 return ov->value;
543 }
544 }
545 }
546
547 /* The visual ID was not found in the overlay list. */
548 XFree((void *) overlay_info);
549 return -1;
550 }
551
552
553
554 /**
555 * Try to get an X visual which matches the given arguments.
556 */
557 static XVisualInfo *
558 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
559 {
560 XVisualInfo temp, *vis;
561 long mask;
562 int n;
563 unsigned int default_depth;
564 int default_class;
565
566 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
567 temp.screen = scr;
568 temp.depth = depth;
569 temp.CLASS = xclass;
570
571 default_depth = DefaultDepth(dpy,scr);
572 default_class = DefaultVisual(dpy,scr)->CLASS;
573
574 if (depth==default_depth && xclass==default_class) {
575 /* try to get root window's visual */
576 temp.visualid = DefaultVisual(dpy,scr)->visualid;
577 mask |= VisualIDMask;
578 }
579
580 vis = XGetVisualInfo( dpy, mask, &temp, &n );
581
582 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
583 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
584 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
585 */
586 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
587 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
588 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
589 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
590 return vis;
591 }
592 else {
593 XFree((void *) vis);
594 return NULL;
595 }
596 }
597
598 return vis;
599 }
600
601
602
603 /*
604 * Retrieve the value of the given environment variable and find
605 * the X visual which matches it.
606 * Input: dpy - the display
607 * screen - the screen number
608 * varname - the name of the environment variable
609 * Return: an XVisualInfo pointer to NULL if error.
610 */
611 static XVisualInfo *
612 get_env_visual(Display *dpy, int scr, const char *varname)
613 {
614 char value[100], type[100];
615 int depth, xclass = -1;
616 XVisualInfo *vis;
617
618 if (!_mesa_getenv( varname )) {
619 return NULL;
620 }
621
622 _mesa_strncpy( value, _mesa_getenv(varname), 100 );
623 value[99] = 0;
624
625 sscanf( value, "%s %d", type, &depth );
626
627 if (_mesa_strcmp(type,"TrueColor")==0) xclass = TrueColor;
628 else if (_mesa_strcmp(type,"DirectColor")==0) xclass = DirectColor;
629 else if (_mesa_strcmp(type,"PseudoColor")==0) xclass = PseudoColor;
630 else if (_mesa_strcmp(type,"StaticColor")==0) xclass = StaticColor;
631 else if (_mesa_strcmp(type,"GrayScale")==0) xclass = GrayScale;
632 else if (_mesa_strcmp(type,"StaticGray")==0) xclass = StaticGray;
633
634 if (xclass>-1 && depth>0) {
635 vis = get_visual( dpy, scr, depth, xclass );
636 if (vis) {
637 return vis;
638 }
639 }
640
641 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
642 type, depth);
643
644 return NULL;
645 }
646
647
648
649 /*
650 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
651 * Input: dpy, screen - X display and screen number
652 * rgba - GL_TRUE = RGBA mode, GL_FALSE = CI mode
653 * min_depth - minimum visual depth
654 * preferred_class - preferred GLX visual class or DONT_CARE
655 * Return: pointer to an XVisualInfo or NULL.
656 */
657 static XVisualInfo *
658 choose_x_visual( Display *dpy, int screen, GLboolean rgba, int min_depth,
659 int preferred_class )
660 {
661 XVisualInfo *vis;
662 int xclass, visclass = 0;
663 int depth;
664
665 if (rgba) {
666 Atom hp_cr_maps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", True);
667 /* First see if the MESA_RGB_VISUAL env var is defined */
668 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
669 if (vis) {
670 return vis;
671 }
672 /* Otherwise, search for a suitable visual */
673 if (preferred_class==DONT_CARE) {
674 for (xclass=0;xclass<6;xclass++) {
675 switch (xclass) {
676 case 0: visclass = TrueColor; break;
677 case 1: visclass = DirectColor; break;
678 case 2: visclass = PseudoColor; break;
679 case 3: visclass = StaticColor; break;
680 case 4: visclass = GrayScale; break;
681 case 5: visclass = StaticGray; break;
682 }
683 if (min_depth==0) {
684 /* start with shallowest */
685 for (depth=0;depth<=32;depth++) {
686 if (visclass==TrueColor && depth==8 && !hp_cr_maps) {
687 /* Special case: try to get 8-bit PseudoColor before */
688 /* 8-bit TrueColor */
689 vis = get_visual( dpy, screen, 8, PseudoColor );
690 if (vis) {
691 return vis;
692 }
693 }
694 vis = get_visual( dpy, screen, depth, visclass );
695 if (vis) {
696 return vis;
697 }
698 }
699 }
700 else {
701 /* start with deepest */
702 for (depth=32;depth>=min_depth;depth--) {
703 if (visclass==TrueColor && depth==8 && !hp_cr_maps) {
704 /* Special case: try to get 8-bit PseudoColor before */
705 /* 8-bit TrueColor */
706 vis = get_visual( dpy, screen, 8, PseudoColor );
707 if (vis) {
708 return vis;
709 }
710 }
711 vis = get_visual( dpy, screen, depth, visclass );
712 if (vis) {
713 return vis;
714 }
715 }
716 }
717 }
718 }
719 else {
720 /* search for a specific visual class */
721 switch (preferred_class) {
722 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
723 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
724 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
725 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
726 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
727 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
728 default: return NULL;
729 }
730 if (min_depth==0) {
731 /* start with shallowest */
732 for (depth=0;depth<=32;depth++) {
733 vis = get_visual( dpy, screen, depth, visclass );
734 if (vis) {
735 return vis;
736 }
737 }
738 }
739 else {
740 /* start with deepest */
741 for (depth=32;depth>=min_depth;depth--) {
742 vis = get_visual( dpy, screen, depth, visclass );
743 if (vis) {
744 return vis;
745 }
746 }
747 }
748 }
749 }
750 else {
751 /* First see if the MESA_CI_VISUAL env var is defined */
752 vis = get_env_visual( dpy, screen, "MESA_CI_VISUAL" );
753 if (vis) {
754 return vis;
755 }
756 /* Otherwise, search for a suitable visual, starting with shallowest */
757 if (preferred_class==DONT_CARE) {
758 for (xclass=0;xclass<4;xclass++) {
759 switch (xclass) {
760 case 0: visclass = PseudoColor; break;
761 case 1: visclass = StaticColor; break;
762 case 2: visclass = GrayScale; break;
763 case 3: visclass = StaticGray; break;
764 }
765 /* try 8-bit up through 16-bit */
766 for (depth=8;depth<=16;depth++) {
767 vis = get_visual( dpy, screen, depth, visclass );
768 if (vis) {
769 return vis;
770 }
771 }
772 /* try min_depth up to 8-bit */
773 for (depth=min_depth;depth<8;depth++) {
774 vis = get_visual( dpy, screen, depth, visclass );
775 if (vis) {
776 return vis;
777 }
778 }
779 }
780 }
781 else {
782 /* search for a specific visual class */
783 switch (preferred_class) {
784 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
785 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
786 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
787 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
788 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
789 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
790 default: return NULL;
791 }
792 /* try 8-bit up through 16-bit */
793 for (depth=8;depth<=16;depth++) {
794 vis = get_visual( dpy, screen, depth, visclass );
795 if (vis) {
796 return vis;
797 }
798 }
799 /* try min_depth up to 8-bit */
800 for (depth=min_depth;depth<8;depth++) {
801 vis = get_visual( dpy, screen, depth, visclass );
802 if (vis) {
803 return vis;
804 }
805 }
806 }
807 }
808
809 /* didn't find a visual */
810 return NULL;
811 }
812
813
814
815 /*
816 * Find the deepest X over/underlay visual of at least min_depth.
817 * Input: dpy, screen - X display and screen number
818 * level - the over/underlay level
819 * trans_type - transparent pixel type: GLX_NONE_EXT,
820 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
821 * or DONT_CARE
822 * trans_value - transparent pixel value or DONT_CARE
823 * min_depth - minimum visual depth
824 * preferred_class - preferred GLX visual class or DONT_CARE
825 * Return: pointer to an XVisualInfo or NULL.
826 */
827 static XVisualInfo *
828 choose_x_overlay_visual( Display *dpy, int scr, GLboolean rgbFlag,
829 int level, int trans_type, int trans_value,
830 int min_depth, int preferred_class )
831 {
832 OverlayInfo *overlay_info;
833 int numOverlaysPerScreen;
834 int i;
835 XVisualInfo *deepvis;
836 int deepest;
837
838 /*DEBUG int tt, tv; */
839
840 switch (preferred_class) {
841 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
842 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
843 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
844 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
845 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
846 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
847 default: preferred_class = DONT_CARE;
848 }
849
850 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
851 if (!overlay_info) {
852 return NULL;
853 }
854
855 /* Search for the deepest overlay which satisifies all criteria. */
856 deepest = min_depth;
857 deepvis = NULL;
858
859 for (i = 0; i < numOverlaysPerScreen; i++) {
860 const OverlayInfo *ov = overlay_info + i;
861 XVisualInfo *vislist, vistemplate;
862 int count;
863
864 if (ov->layer!=level) {
865 /* failed overlay level criteria */
866 continue;
867 }
868 if (!(trans_type==DONT_CARE
869 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
870 && ov->transparent_type>0)
871 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
872 /* failed transparent pixel type criteria */
873 continue;
874 }
875 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
876 /* failed transparent pixel value criteria */
877 continue;
878 }
879
880 /* get XVisualInfo and check the depth */
881 vistemplate.visualid = ov->overlay_visual;
882 vistemplate.screen = scr;
883 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
884 &vistemplate, &count );
885
886 if (count!=1) {
887 /* something went wrong */
888 continue;
889 }
890 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
891 /* wrong visual class */
892 continue;
893 }
894
895 /* if RGB was requested, make sure we have True/DirectColor */
896 if (rgbFlag && vislist->CLASS != TrueColor
897 && vislist->CLASS != DirectColor)
898 continue;
899
900 /* if CI was requested, make sure we have a color indexed visual */
901 if (!rgbFlag
902 && (vislist->CLASS == TrueColor || vislist->CLASS == DirectColor))
903 continue;
904
905 if (deepvis==NULL || vislist->depth > deepest) {
906 /* YES! found a satisfactory visual */
907 if (deepvis) {
908 XFree( deepvis );
909 }
910 deepest = vislist->depth;
911 deepvis = vislist;
912 /* DEBUG tt = ov->transparent_type;*/
913 /* DEBUG tv = ov->value; */
914 }
915 }
916
917 /*DEBUG
918 if (deepvis) {
919 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
920 deepvis->visualid, level, deepvis->depth, tt, tv );
921 }
922 */
923 return deepvis;
924 }
925
926
927 /**********************************************************************/
928 /*** Display-related functions ***/
929 /**********************************************************************/
930
931
932 /**
933 * Free all XMesaVisuals which are associated with the given display.
934 */
935 static void
936 destroy_visuals_on_display(Display *dpy)
937 {
938 int i;
939 for (i = 0; i < NumVisuals; i++) {
940 if (VisualTable[i]->display == dpy) {
941 /* remove this visual */
942 int j;
943 free(VisualTable[i]);
944 for (j = i; j < NumVisuals - 1; j++)
945 VisualTable[j] = VisualTable[j + 1];
946 NumVisuals--;
947 }
948 }
949 }
950
951
952 /**
953 * Called from XCloseDisplay() to let us free our display-related data.
954 */
955 static int
956 close_display_callback(Display *dpy, XExtCodes *codes)
957 {
958 destroy_visuals_on_display(dpy);
959 xmesa_destroy_buffers_on_display(dpy);
960 return 0;
961 }
962
963
964 /**
965 * Look for the named extension on given display and return a pointer
966 * to the _XExtension data, or NULL if extension not found.
967 */
968 static _XExtension *
969 lookup_extension(Display *dpy, const char *extName)
970 {
971 _XExtension *ext;
972 for (ext = dpy->ext_procs; ext; ext = ext->next) {
973 if (ext->name && strcmp(ext->name, extName) == 0) {
974 return ext;
975 }
976 }
977 return NULL;
978 }
979
980
981 /**
982 * Whenever we're given a new Display pointer, call this function to
983 * register our close_display_callback function.
984 */
985 static void
986 register_with_display(Display *dpy)
987 {
988 const char *extName = "MesaGLX";
989 _XExtension *ext;
990
991 ext = lookup_extension(dpy, extName);
992 if (!ext) {
993 XExtCodes *c = XAddExtension(dpy);
994 ext = dpy->ext_procs; /* new extension is at head of list */
995 assert(c->extension == ext->codes.extension);
996 ext->name = _mesa_strdup(extName);
997 ext->close_display = close_display_callback;
998 }
999 }
1000
1001
1002 /**********************************************************************/
1003 /*** Begin Fake GLX API Functions ***/
1004 /**********************************************************************/
1005
1006
1007 /**
1008 * Helper used by glXChooseVisual and glXChooseFBConfig.
1009 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
1010 * the later.
1011 * In either case, the attribute list is terminated with the value 'None'.
1012 */
1013 static XMesaVisual
1014 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
1015 {
1016 const GLboolean rgbModeDefault = fbConfig;
1017 const int *parselist;
1018 XVisualInfo *vis;
1019 int min_ci = 0;
1020 int min_red=0, min_green=0, min_blue=0;
1021 GLboolean rgb_flag = rgbModeDefault;
1022 GLboolean alpha_flag = GL_FALSE;
1023 GLboolean double_flag = GL_FALSE;
1024 GLboolean stereo_flag = GL_FALSE;
1025 GLint depth_size = 0;
1026 GLint stencil_size = 0;
1027 GLint accumRedSize = 0;
1028 GLint accumGreenSize = 0;
1029 GLint accumBlueSize = 0;
1030 GLint accumAlphaSize = 0;
1031 int level = 0;
1032 int visual_type = DONT_CARE;
1033 int trans_type = DONT_CARE;
1034 int trans_value = DONT_CARE;
1035 GLint caveat = DONT_CARE;
1036 XMesaVisual xmvis = NULL;
1037 int desiredVisualID = -1;
1038 int numAux = 0;
1039
1040 parselist = list;
1041
1042 while (*parselist) {
1043
1044 switch (*parselist) {
1045 case GLX_USE_GL:
1046 if (fbConfig) {
1047 /* invalid token */
1048 return NULL;
1049 }
1050 else {
1051 /* skip */
1052 parselist++;
1053 }
1054 break;
1055 case GLX_BUFFER_SIZE:
1056 parselist++;
1057 min_ci = *parselist++;
1058 break;
1059 case GLX_LEVEL:
1060 parselist++;
1061 level = *parselist++;
1062 break;
1063 case GLX_RGBA:
1064 if (fbConfig) {
1065 /* invalid token */
1066 return NULL;
1067 }
1068 else {
1069 rgb_flag = GL_TRUE;
1070 parselist++;
1071 }
1072 break;
1073 case GLX_DOUBLEBUFFER:
1074 parselist++;
1075 if (fbConfig) {
1076 double_flag = *parselist++;
1077 }
1078 else {
1079 double_flag = GL_TRUE;
1080 }
1081 break;
1082 case GLX_STEREO:
1083 parselist++;
1084 if (fbConfig) {
1085 stereo_flag = *parselist++;
1086 }
1087 else {
1088 stereo_flag = GL_TRUE;
1089 }
1090 break;
1091 case GLX_AUX_BUFFERS:
1092 parselist++;
1093 numAux = *parselist++;
1094 if (numAux > MAX_AUX_BUFFERS)
1095 return NULL;
1096 break;
1097 case GLX_RED_SIZE:
1098 parselist++;
1099 min_red = *parselist++;
1100 break;
1101 case GLX_GREEN_SIZE:
1102 parselist++;
1103 min_green = *parselist++;
1104 break;
1105 case GLX_BLUE_SIZE:
1106 parselist++;
1107 min_blue = *parselist++;
1108 break;
1109 case GLX_ALPHA_SIZE:
1110 parselist++;
1111 {
1112 GLint size = *parselist++;
1113 alpha_flag = size ? GL_TRUE : GL_FALSE;
1114 }
1115 break;
1116 case GLX_DEPTH_SIZE:
1117 parselist++;
1118 depth_size = *parselist++;
1119 break;
1120 case GLX_STENCIL_SIZE:
1121 parselist++;
1122 stencil_size = *parselist++;
1123 break;
1124 case GLX_ACCUM_RED_SIZE:
1125 parselist++;
1126 {
1127 GLint size = *parselist++;
1128 accumRedSize = MAX2( accumRedSize, size );
1129 }
1130 break;
1131 case GLX_ACCUM_GREEN_SIZE:
1132 parselist++;
1133 {
1134 GLint size = *parselist++;
1135 accumGreenSize = MAX2( accumGreenSize, size );
1136 }
1137 break;
1138 case GLX_ACCUM_BLUE_SIZE:
1139 parselist++;
1140 {
1141 GLint size = *parselist++;
1142 accumBlueSize = MAX2( accumBlueSize, size );
1143 }
1144 break;
1145 case GLX_ACCUM_ALPHA_SIZE:
1146 parselist++;
1147 {
1148 GLint size = *parselist++;
1149 accumAlphaSize = MAX2( accumAlphaSize, size );
1150 }
1151 break;
1152
1153 /*
1154 * GLX_EXT_visual_info extension
1155 */
1156 case GLX_X_VISUAL_TYPE_EXT:
1157 parselist++;
1158 visual_type = *parselist++;
1159 break;
1160 case GLX_TRANSPARENT_TYPE_EXT:
1161 parselist++;
1162 trans_type = *parselist++;
1163 break;
1164 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1165 parselist++;
1166 trans_value = *parselist++;
1167 break;
1168 case GLX_TRANSPARENT_RED_VALUE_EXT:
1169 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1170 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1171 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1172 /* ignore */
1173 parselist++;
1174 parselist++;
1175 break;
1176
1177 /*
1178 * GLX_EXT_visual_info extension
1179 */
1180 case GLX_VISUAL_CAVEAT_EXT:
1181 parselist++;
1182 caveat = *parselist++; /* ignored for now */
1183 break;
1184
1185 /*
1186 * GLX_ARB_multisample
1187 */
1188 case GLX_SAMPLE_BUFFERS_ARB:
1189 /* ms not supported */
1190 return NULL;
1191 case GLX_SAMPLES_ARB:
1192 /* ms not supported */
1193 return NULL;
1194
1195 /*
1196 * FBConfig attribs.
1197 */
1198 case GLX_RENDER_TYPE:
1199 if (!fbConfig)
1200 return NULL;
1201 parselist++;
1202 if (*parselist == GLX_RGBA_BIT) {
1203 rgb_flag = GL_TRUE;
1204 }
1205 else if (*parselist == GLX_COLOR_INDEX_BIT) {
1206 rgb_flag = GL_FALSE;
1207 }
1208 else if (*parselist == 0) {
1209 rgb_flag = GL_TRUE;
1210 }
1211 parselist++;
1212 break;
1213 case GLX_DRAWABLE_TYPE:
1214 if (!fbConfig)
1215 return NULL;
1216 parselist++;
1217 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1218 return NULL; /* bad bit */
1219 }
1220 parselist++;
1221 break;
1222 case GLX_FBCONFIG_ID:
1223 if (!fbConfig)
1224 return NULL;
1225 parselist++;
1226 desiredVisualID = *parselist++;
1227 break;
1228 case GLX_X_RENDERABLE:
1229 if (!fbConfig)
1230 return NULL;
1231 parselist += 2;
1232 /* ignore */
1233 break;
1234
1235 #ifdef GLX_EXT_texture_from_pixmap
1236 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1237 parselist++; /*skip*/
1238 break;
1239 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1240 parselist++; /*skip*/
1241 break;
1242 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1243 parselist++; /*skip*/
1244 break;
1245 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1246 parselist++;
1247 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1248 GLX_TEXTURE_2D_BIT_EXT |
1249 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1250 /* invalid bit */
1251 return NULL;
1252 }
1253 break;
1254 case GLX_Y_INVERTED_EXT:
1255 parselist++; /*skip*/
1256 break;
1257 #endif
1258
1259 case None:
1260 /* end of list */
1261 break;
1262
1263 default:
1264 /* undefined attribute */
1265 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1266 *parselist);
1267 return NULL;
1268 }
1269 }
1270
1271 (void) caveat;
1272
1273 /*
1274 * Since we're only simulating the GLX extension this function will never
1275 * find any real GL visuals. Instead, all we can do is try to find an RGB
1276 * or CI visual of appropriate depth. Other requested attributes such as
1277 * double buffering, depth buffer, etc. will be associated with the X
1278 * visual and stored in the VisualTable[].
1279 */
1280 if (desiredVisualID != -1) {
1281 /* try to get a specific visual, by visualID */
1282 XVisualInfo temp;
1283 int n;
1284 temp.visualid = desiredVisualID;
1285 temp.screen = screen;
1286 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1287 if (vis) {
1288 /* give the visual some useful GLX attributes */
1289 double_flag = GL_TRUE;
1290 if (vis->depth > 8)
1291 rgb_flag = GL_TRUE;
1292 depth_size = 24; /*default_depth_bits();*/
1293 stencil_size = STENCIL_BITS;
1294 /* XXX accum??? */
1295 }
1296 }
1297 else if (level==0) {
1298 /* normal color planes */
1299 if (rgb_flag) {
1300 /* Get an RGB visual */
1301 int min_rgb = min_red + min_green + min_blue;
1302 if (min_rgb>1 && min_rgb<8) {
1303 /* a special case to be sure we can get a monochrome visual */
1304 min_rgb = 1;
1305 }
1306 vis = choose_x_visual( dpy, screen, rgb_flag, min_rgb, visual_type );
1307 }
1308 else {
1309 /* Get a color index visual */
1310 vis = choose_x_visual( dpy, screen, rgb_flag, min_ci, visual_type );
1311 accumRedSize = accumGreenSize = accumBlueSize = accumAlphaSize = 0;
1312 }
1313 }
1314 else {
1315 /* over/underlay planes */
1316 if (rgb_flag) {
1317 /* rgba overlay */
1318 int min_rgb = min_red + min_green + min_blue;
1319 if (min_rgb>1 && min_rgb<8) {
1320 /* a special case to be sure we can get a monochrome visual */
1321 min_rgb = 1;
1322 }
1323 vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level,
1324 trans_type, trans_value, min_rgb, visual_type );
1325 }
1326 else {
1327 /* color index overlay */
1328 vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level,
1329 trans_type, trans_value, min_ci, visual_type );
1330 }
1331 }
1332
1333 if (vis) {
1334 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1335 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1336 * largest depth buffer size, which is 32bits/value. Instead, we
1337 * return 16 to maintain performance with earlier versions of Mesa.
1338 */
1339 if (stencil_size > 0)
1340 depth_size = 24; /* if Z and stencil, always use 24+8 format */
1341 else if (depth_size > 24)
1342 depth_size = 32;
1343 else if (depth_size > 16)
1344 depth_size = 24;
1345 else if (depth_size > 0) {
1346 depth_size = default_depth_bits();
1347 }
1348
1349 if (!alpha_flag) {
1350 alpha_flag = default_alpha_bits() > 0;
1351 }
1352
1353 /* we only support one size of stencil and accum buffers. */
1354 if (stencil_size > 0)
1355 stencil_size = STENCIL_BITS;
1356 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1357 accumAlphaSize > 0) {
1358 accumRedSize =
1359 accumGreenSize =
1360 accumBlueSize = default_accum_bits();
1361 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1362 }
1363
1364 xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
1365 stereo_flag, depth_size, stencil_size,
1366 accumRedSize, accumGreenSize,
1367 accumBlueSize, accumAlphaSize, level, numAux );
1368 }
1369
1370 return xmvis;
1371 }
1372
1373
1374 static XVisualInfo *
1375 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1376 {
1377 XMesaVisual xmvis;
1378
1379 /* register ourselves as an extension on this display */
1380 register_with_display(dpy);
1381
1382 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1383 if (xmvis) {
1384 #if 0
1385 return xmvis->vishandle;
1386 #else
1387 /* create a new vishandle - the cached one may be stale */
1388 xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
1389 if (xmvis->vishandle) {
1390 _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1391 }
1392 return xmvis->vishandle;
1393 #endif
1394 }
1395 else
1396 return NULL;
1397 }
1398
1399
1400 static GLXContext
1401 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1402 GLXContext share_list, Bool direct )
1403 {
1404 XMesaVisual xmvis;
1405 struct fake_glx_context *glxCtx;
1406 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
1407
1408 if (!dpy || !visinfo)
1409 return 0;
1410
1411 glxCtx = CALLOC_STRUCT(fake_glx_context);
1412 if (!glxCtx)
1413 return 0;
1414
1415 /* deallocate unused windows/buffers */
1416 #if 0
1417 XMesaGarbageCollect();
1418 #endif
1419
1420 xmvis = find_glx_visual( dpy, visinfo );
1421 if (!xmvis) {
1422 /* This visual wasn't found with glXChooseVisual() */
1423 xmvis = create_glx_visual( dpy, visinfo );
1424 if (!xmvis) {
1425 /* unusable visual */
1426 _mesa_free(glxCtx);
1427 return NULL;
1428 }
1429 }
1430
1431 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
1432 shareCtx ? shareCtx->xmesaContext : NULL);
1433 if (!glxCtx->xmesaContext) {
1434 _mesa_free(glxCtx);
1435 return NULL;
1436 }
1437
1438 glxCtx->glxContext.isDirect = GL_FALSE;
1439 glxCtx->glxContext.currentDpy = dpy;
1440 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
1441
1442 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
1443
1444 return (GLXContext) glxCtx;
1445 }
1446
1447
1448 /* XXX these may have to be removed due to thread-safety issues. */
1449 static GLXContext MakeCurrent_PrevContext = 0;
1450 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1451 static GLXDrawable MakeCurrent_PrevReadable = 0;
1452 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1453 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1454
1455
1456 /* GLX 1.3 and later */
1457 static Bool
1458 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1459 GLXDrawable read, GLXContext ctx )
1460 {
1461 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1462
1463 if (ctx && draw && read) {
1464 XMesaBuffer drawBuffer, readBuffer;
1465 XMesaContext xmctx = glxCtx->xmesaContext;
1466
1467 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1468 if (ctx == MakeCurrent_PrevContext
1469 && draw == MakeCurrent_PrevDrawable) {
1470 drawBuffer = MakeCurrent_PrevDrawBuffer;
1471 }
1472 else {
1473 drawBuffer = XMesaFindBuffer( dpy, draw );
1474 }
1475 if (!drawBuffer) {
1476 /* drawable must be a new window! */
1477 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1478 if (!drawBuffer) {
1479 /* Out of memory, or context/drawable depth mismatch */
1480 return False;
1481 }
1482 #ifdef FX
1483 FXcreateContext( xmctx->xm_visual, draw, xmctx, drawBuffer );
1484 #endif
1485 }
1486
1487 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1488 if (ctx == MakeCurrent_PrevContext
1489 && read == MakeCurrent_PrevReadable) {
1490 readBuffer = MakeCurrent_PrevReadBuffer;
1491 }
1492 else {
1493 readBuffer = XMesaFindBuffer( dpy, read );
1494 }
1495 if (!readBuffer) {
1496 /* drawable must be a new window! */
1497 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1498 if (!readBuffer) {
1499 /* Out of memory, or context/drawable depth mismatch */
1500 return False;
1501 }
1502 #ifdef FX
1503 FXcreateContext( xmctx->xm_visual, read, xmctx, readBuffer );
1504 #endif
1505 }
1506
1507 if (MakeCurrent_PrevContext == ctx &&
1508 MakeCurrent_PrevDrawable == draw &&
1509 MakeCurrent_PrevReadable == read &&
1510 MakeCurrent_PrevDrawBuffer == drawBuffer &&
1511 MakeCurrent_PrevReadBuffer == readBuffer)
1512 return True;
1513
1514 MakeCurrent_PrevContext = ctx;
1515 MakeCurrent_PrevDrawable = draw;
1516 MakeCurrent_PrevReadable = read;
1517 MakeCurrent_PrevDrawBuffer = drawBuffer;
1518 MakeCurrent_PrevReadBuffer = readBuffer;
1519
1520 /* Now make current! */
1521 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1522 ((__GLXcontext *) ctx)->currentDpy = dpy;
1523 ((__GLXcontext *) ctx)->currentDrawable = draw;
1524 ((__GLXcontext *) ctx)->currentReadable = read;
1525 return True;
1526 }
1527 else {
1528 return False;
1529 }
1530 }
1531 else if (!ctx && !draw && !read) {
1532 /* release current context w/out assigning new one. */
1533 XMesaMakeCurrent( NULL, NULL );
1534 MakeCurrent_PrevContext = 0;
1535 MakeCurrent_PrevDrawable = 0;
1536 MakeCurrent_PrevReadable = 0;
1537 MakeCurrent_PrevDrawBuffer = 0;
1538 MakeCurrent_PrevReadBuffer = 0;
1539 return True;
1540 }
1541 else {
1542 /* The args must either all be non-zero or all zero.
1543 * This is an error.
1544 */
1545 return False;
1546 }
1547 }
1548
1549
1550 static Bool
1551 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1552 {
1553 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1554 }
1555
1556
1557 static GLXPixmap
1558 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1559 {
1560 XMesaVisual v;
1561 XMesaBuffer b;
1562
1563 v = find_glx_visual( dpy, visinfo );
1564 if (!v) {
1565 v = create_glx_visual( dpy, visinfo );
1566 if (!v) {
1567 /* unusable visual */
1568 return 0;
1569 }
1570 }
1571
1572 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1573 if (!b) {
1574 return 0;
1575 }
1576 return b->drawable;
1577 }
1578
1579
1580 /*** GLX_MESA_pixmap_colormap ***/
1581
1582 static GLXPixmap
1583 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1584 Pixmap pixmap, Colormap cmap )
1585 {
1586 XMesaVisual v;
1587 XMesaBuffer b;
1588
1589 v = find_glx_visual( dpy, visinfo );
1590 if (!v) {
1591 v = create_glx_visual( dpy, visinfo );
1592 if (!v) {
1593 /* unusable visual */
1594 return 0;
1595 }
1596 }
1597
1598 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1599 if (!b) {
1600 return 0;
1601 }
1602 return b->drawable;
1603 }
1604
1605
1606 static void
1607 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1608 {
1609 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1610 if (b) {
1611 XMesaDestroyBuffer(b);
1612 }
1613 else if (_mesa_getenv("MESA_DEBUG")) {
1614 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1615 }
1616 }
1617
1618
1619 static void
1620 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1621 unsigned long mask )
1622 {
1623 struct fake_glx_context *fakeSrc = (struct fake_glx_context *) src;
1624 struct fake_glx_context *fakeDst = (struct fake_glx_context *) dst;
1625 XMesaContext xm_src = fakeSrc->xmesaContext;
1626 XMesaContext xm_dst = fakeDst->xmesaContext;
1627 (void) dpy;
1628 if (MakeCurrent_PrevContext == src) {
1629 _mesa_Flush();
1630 }
1631 st_copy_context_state( xm_src->st, xm_dst->st, (GLuint) mask );
1632 }
1633
1634
1635 static Bool
1636 Fake_glXQueryExtension( Display *dpy, int *errorb, int *event )
1637 {
1638 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1639 (void) dpy;
1640 (void) errorb;
1641 (void) event;
1642 return True;
1643 }
1644
1645
1646 extern void _kw_ungrab_all( Display *dpy );
1647 void _kw_ungrab_all( Display *dpy )
1648 {
1649 XUngrabPointer( dpy, CurrentTime );
1650 XUngrabKeyboard( dpy, CurrentTime );
1651 }
1652
1653
1654 static void
1655 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1656 {
1657 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1658 (void) dpy;
1659 MakeCurrent_PrevContext = 0;
1660 MakeCurrent_PrevDrawable = 0;
1661 MakeCurrent_PrevReadable = 0;
1662 MakeCurrent_PrevDrawBuffer = 0;
1663 MakeCurrent_PrevReadBuffer = 0;
1664 XMesaDestroyContext( glxCtx->xmesaContext );
1665 XMesaGarbageCollect();
1666 _mesa_free(glxCtx);
1667 }
1668
1669
1670 static Bool
1671 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1672 {
1673 (void) dpy;
1674 (void) ctx;
1675 return False;
1676 }
1677
1678
1679
1680 static void
1681 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1682 {
1683 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1684
1685 if (buffer) {
1686 XMesaSwapBuffers(buffer);
1687 }
1688 else if (_mesa_getenv("MESA_DEBUG")) {
1689 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1690 (int) drawable);
1691 }
1692 }
1693
1694
1695
1696 /*** GLX_MESA_copy_sub_buffer ***/
1697
1698 static void
1699 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1700 int x, int y, int width, int height )
1701 {
1702 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1703 if (buffer) {
1704 XMesaCopySubBuffer(buffer, x, y, width, height);
1705 }
1706 else if (_mesa_getenv("MESA_DEBUG")) {
1707 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1708 }
1709 }
1710
1711
1712 static Bool
1713 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1714 {
1715 (void) dpy;
1716 /* Return GLX version, not Mesa version */
1717 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1718 *maj = CLIENT_MAJOR_VERSION;
1719 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1720 return True;
1721 }
1722
1723
1724 /*
1725 * Query the GLX attributes of the given XVisualInfo.
1726 */
1727 static int
1728 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1729 {
1730 ASSERT(xmvis);
1731 switch(attrib) {
1732 case GLX_USE_GL:
1733 if (fbconfig)
1734 return GLX_BAD_ATTRIBUTE;
1735 *value = (int) True;
1736 return 0;
1737 case GLX_BUFFER_SIZE:
1738 *value = xmvis->visinfo->depth;
1739 return 0;
1740 case GLX_LEVEL:
1741 *value = xmvis->mesa_visual.level;
1742 return 0;
1743 case GLX_RGBA:
1744 if (fbconfig)
1745 return GLX_BAD_ATTRIBUTE;
1746 if (xmvis->mesa_visual.rgbMode) {
1747 *value = True;
1748 }
1749 else {
1750 *value = False;
1751 }
1752 return 0;
1753 case GLX_DOUBLEBUFFER:
1754 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1755 return 0;
1756 case GLX_STEREO:
1757 *value = (int) xmvis->mesa_visual.stereoMode;
1758 return 0;
1759 case GLX_AUX_BUFFERS:
1760 *value = xmvis->mesa_visual.numAuxBuffers;
1761 return 0;
1762 case GLX_RED_SIZE:
1763 *value = xmvis->mesa_visual.redBits;
1764 return 0;
1765 case GLX_GREEN_SIZE:
1766 *value = xmvis->mesa_visual.greenBits;
1767 return 0;
1768 case GLX_BLUE_SIZE:
1769 *value = xmvis->mesa_visual.blueBits;
1770 return 0;
1771 case GLX_ALPHA_SIZE:
1772 *value = xmvis->mesa_visual.alphaBits;
1773 return 0;
1774 case GLX_DEPTH_SIZE:
1775 *value = xmvis->mesa_visual.depthBits;
1776 return 0;
1777 case GLX_STENCIL_SIZE:
1778 *value = xmvis->mesa_visual.stencilBits;
1779 return 0;
1780 case GLX_ACCUM_RED_SIZE:
1781 *value = xmvis->mesa_visual.accumRedBits;
1782 return 0;
1783 case GLX_ACCUM_GREEN_SIZE:
1784 *value = xmvis->mesa_visual.accumGreenBits;
1785 return 0;
1786 case GLX_ACCUM_BLUE_SIZE:
1787 *value = xmvis->mesa_visual.accumBlueBits;
1788 return 0;
1789 case GLX_ACCUM_ALPHA_SIZE:
1790 *value = xmvis->mesa_visual.accumAlphaBits;
1791 return 0;
1792
1793 /*
1794 * GLX_EXT_visual_info extension
1795 */
1796 case GLX_X_VISUAL_TYPE_EXT:
1797 switch (xmvis->visinfo->CLASS) {
1798 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1799 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1800 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1801 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1802 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1803 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1804 }
1805 return 0;
1806 case GLX_TRANSPARENT_TYPE_EXT:
1807 if (xmvis->mesa_visual.level==0) {
1808 /* normal planes */
1809 *value = GLX_NONE_EXT;
1810 }
1811 else if (xmvis->mesa_visual.level>0) {
1812 /* overlay */
1813 if (xmvis->mesa_visual.rgbMode) {
1814 *value = GLX_TRANSPARENT_RGB_EXT;
1815 }
1816 else {
1817 *value = GLX_TRANSPARENT_INDEX_EXT;
1818 }
1819 }
1820 else if (xmvis->mesa_visual.level<0) {
1821 /* underlay */
1822 *value = GLX_NONE_EXT;
1823 }
1824 return 0;
1825 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1826 {
1827 int pixel = transparent_pixel( xmvis );
1828 if (pixel>=0) {
1829 *value = pixel;
1830 }
1831 /* else undefined */
1832 }
1833 return 0;
1834 case GLX_TRANSPARENT_RED_VALUE_EXT:
1835 /* undefined */
1836 return 0;
1837 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1838 /* undefined */
1839 return 0;
1840 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1841 /* undefined */
1842 return 0;
1843 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1844 /* undefined */
1845 return 0;
1846
1847 /*
1848 * GLX_EXT_visual_info extension
1849 */
1850 case GLX_VISUAL_CAVEAT_EXT:
1851 /* test for zero, just in case */
1852 if (xmvis->mesa_visual.visualRating > 0)
1853 *value = xmvis->mesa_visual.visualRating;
1854 else
1855 *value = GLX_NONE_EXT;
1856 return 0;
1857
1858 /*
1859 * GLX_ARB_multisample
1860 */
1861 case GLX_SAMPLE_BUFFERS_ARB:
1862 *value = 0;
1863 return 0;
1864 case GLX_SAMPLES_ARB:
1865 *value = 0;
1866 return 0;
1867
1868 /*
1869 * For FBConfigs:
1870 */
1871 case GLX_SCREEN_EXT:
1872 if (!fbconfig)
1873 return GLX_BAD_ATTRIBUTE;
1874 *value = xmvis->visinfo->screen;
1875 break;
1876 case GLX_DRAWABLE_TYPE: /*SGIX too */
1877 if (!fbconfig)
1878 return GLX_BAD_ATTRIBUTE;
1879 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1880 break;
1881 case GLX_RENDER_TYPE_SGIX:
1882 if (!fbconfig)
1883 return GLX_BAD_ATTRIBUTE;
1884 if (xmvis->mesa_visual.rgbMode)
1885 *value = GLX_RGBA_BIT;
1886 else
1887 *value = GLX_COLOR_INDEX_BIT;
1888 break;
1889 case GLX_X_RENDERABLE_SGIX:
1890 if (!fbconfig)
1891 return GLX_BAD_ATTRIBUTE;
1892 *value = True; /* XXX really? */
1893 break;
1894 case GLX_FBCONFIG_ID_SGIX:
1895 if (!fbconfig)
1896 return GLX_BAD_ATTRIBUTE;
1897 *value = xmvis->visinfo->visualid;
1898 break;
1899 case GLX_MAX_PBUFFER_WIDTH:
1900 if (!fbconfig)
1901 return GLX_BAD_ATTRIBUTE;
1902 /* XXX or MAX_WIDTH? */
1903 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1904 break;
1905 case GLX_MAX_PBUFFER_HEIGHT:
1906 if (!fbconfig)
1907 return GLX_BAD_ATTRIBUTE;
1908 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1909 break;
1910 case GLX_MAX_PBUFFER_PIXELS:
1911 if (!fbconfig)
1912 return GLX_BAD_ATTRIBUTE;
1913 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1914 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1915 break;
1916 case GLX_VISUAL_ID:
1917 if (!fbconfig)
1918 return GLX_BAD_ATTRIBUTE;
1919 *value = xmvis->visinfo->visualid;
1920 break;
1921
1922 #ifdef GLX_EXT_texture_from_pixmap
1923 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1924 *value = True; /*XXX*/
1925 break;
1926 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1927 /* XXX review */
1928 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1929 break;
1930 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1931 *value = True; /*XXX*/
1932 break;
1933 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1934 *value = (GLX_TEXTURE_1D_BIT_EXT |
1935 GLX_TEXTURE_2D_BIT_EXT |
1936 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1937 break;
1938 case GLX_Y_INVERTED_EXT:
1939 *value = True; /*XXX*/
1940 break;
1941 #endif
1942
1943 default:
1944 return GLX_BAD_ATTRIBUTE;
1945 }
1946 return Success;
1947 }
1948
1949
1950 static int
1951 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1952 int attrib, int *value )
1953 {
1954 XMesaVisual xmvis;
1955 int k;
1956 if (!dpy || !visinfo)
1957 return GLX_BAD_ATTRIBUTE;
1958
1959 xmvis = find_glx_visual( dpy, visinfo );
1960 if (!xmvis) {
1961 /* this visual wasn't obtained with glXChooseVisual */
1962 xmvis = create_glx_visual( dpy, visinfo );
1963 if (!xmvis) {
1964 /* this visual can't be used for GL rendering */
1965 if (attrib==GLX_USE_GL) {
1966 *value = (int) False;
1967 return 0;
1968 }
1969 else {
1970 return GLX_BAD_VISUAL;
1971 }
1972 }
1973 }
1974
1975 k = get_config(xmvis, attrib, value, GL_FALSE);
1976 return k;
1977 }
1978
1979
1980 static void
1981 Fake_glXWaitGL( void )
1982 {
1983 XMesaContext xmesa = XMesaGetCurrentContext();
1984 XMesaFlush( xmesa );
1985 }
1986
1987
1988
1989 static void
1990 Fake_glXWaitX( void )
1991 {
1992 XMesaContext xmesa = XMesaGetCurrentContext();
1993 XMesaFlush( xmesa );
1994 }
1995
1996
1997 static const char *
1998 get_extensions( void )
1999 {
2000 #ifdef FX
2001 const char *fx = _mesa_getenv("MESA_GLX_FX");
2002 if (fx && fx[0] != 'd') {
2003 return EXTENSIONS;
2004 }
2005 #endif
2006 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
2007 }
2008
2009
2010
2011 /* GLX 1.1 and later */
2012 static const char *
2013 Fake_glXQueryExtensionsString( Display *dpy, int screen )
2014 {
2015 (void) dpy;
2016 (void) screen;
2017 return get_extensions();
2018 }
2019
2020
2021
2022 /* GLX 1.1 and later */
2023 static const char *
2024 Fake_glXQueryServerString( Display *dpy, int screen, int name )
2025 {
2026 static char version[1000];
2027 _mesa_sprintf(version, "%d.%d %s",
2028 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
2029
2030 (void) dpy;
2031 (void) screen;
2032
2033 switch (name) {
2034 case GLX_EXTENSIONS:
2035 return get_extensions();
2036 case GLX_VENDOR:
2037 return VENDOR;
2038 case GLX_VERSION:
2039 return version;
2040 default:
2041 return NULL;
2042 }
2043 }
2044
2045
2046
2047 /* GLX 1.1 and later */
2048 static const char *
2049 Fake_glXGetClientString( Display *dpy, int name )
2050 {
2051 static char version[1000];
2052 _mesa_sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
2053 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
2054
2055 (void) dpy;
2056
2057 switch (name) {
2058 case GLX_EXTENSIONS:
2059 return get_extensions();
2060 case GLX_VENDOR:
2061 return VENDOR;
2062 case GLX_VERSION:
2063 return version;
2064 default:
2065 return NULL;
2066 }
2067 }
2068
2069
2070
2071 /*
2072 * GLX 1.3 and later
2073 */
2074
2075
2076 static int
2077 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
2078 int attribute, int *value )
2079 {
2080 XMesaVisual v = (XMesaVisual) config;
2081 (void) dpy;
2082 (void) config;
2083
2084 if (!dpy || !config || !value)
2085 return -1;
2086
2087 return get_config(v, attribute, value, GL_TRUE);
2088 }
2089
2090
2091 static GLXFBConfig *
2092 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
2093 {
2094 XVisualInfo *visuals, visTemplate;
2095 const long visMask = VisualScreenMask;
2096 int i;
2097
2098 /* Get list of all X visuals */
2099 visTemplate.screen = screen;
2100 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
2101 if (*nelements > 0) {
2102 XMesaVisual *results;
2103 results = (XMesaVisual *) _mesa_malloc(*nelements * sizeof(XMesaVisual));
2104 if (!results) {
2105 *nelements = 0;
2106 return NULL;
2107 }
2108 for (i = 0; i < *nelements; i++) {
2109 results[i] = create_glx_visual(dpy, visuals + i);
2110 }
2111 return (GLXFBConfig *) results;
2112 }
2113 return NULL;
2114 }
2115
2116
2117 static GLXFBConfig *
2118 Fake_glXChooseFBConfig( Display *dpy, int screen,
2119 const int *attribList, int *nitems )
2120 {
2121 XMesaVisual xmvis;
2122
2123 if (!attribList || !attribList[0]) {
2124 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
2125 return Fake_glXGetFBConfigs(dpy, screen, nitems);
2126 }
2127
2128 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
2129 if (xmvis) {
2130 GLXFBConfig *config = (GLXFBConfig *) _mesa_malloc(sizeof(XMesaVisual));
2131 if (!config) {
2132 *nitems = 0;
2133 return NULL;
2134 }
2135 *nitems = 1;
2136 config[0] = (GLXFBConfig) xmvis;
2137 return (GLXFBConfig *) config;
2138 }
2139 else {
2140 *nitems = 0;
2141 return NULL;
2142 }
2143 }
2144
2145
2146 static XVisualInfo *
2147 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
2148 {
2149 if (dpy && config) {
2150 XMesaVisual xmvis = (XMesaVisual) config;
2151 #if 0
2152 return xmvis->vishandle;
2153 #else
2154 /* create a new vishandle - the cached one may be stale */
2155 xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
2156 if (xmvis->vishandle) {
2157 _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
2158 }
2159 return xmvis->vishandle;
2160 #endif
2161 }
2162 else {
2163 return NULL;
2164 }
2165 }
2166
2167
2168 static GLXWindow
2169 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
2170 const int *attribList )
2171 {
2172 XMesaVisual xmvis = (XMesaVisual) config;
2173 XMesaBuffer xmbuf;
2174 if (!xmvis)
2175 return 0;
2176
2177 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
2178 if (!xmbuf)
2179 return 0;
2180
2181 #ifdef FX
2182 /* XXX this will segfault if actually called */
2183 FXcreateContext(xmvis, win, NULL, xmbuf);
2184 #endif
2185
2186 (void) dpy;
2187 (void) attribList; /* Ignored in GLX 1.3 */
2188
2189 return win; /* A hack for now */
2190 }
2191
2192
2193 static void
2194 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
2195 {
2196 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2197 if (b)
2198 XMesaDestroyBuffer(b);
2199 /* don't destroy X window */
2200 }
2201
2202
2203 /* XXX untested */
2204 static GLXPixmap
2205 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2206 const int *attribList )
2207 {
2208 XMesaVisual v = (XMesaVisual) config;
2209 XMesaBuffer b;
2210 const int *attr;
2211 int target = 0, format = 0, mipmap = 0;
2212 int value;
2213
2214 if (!dpy || !config || !pixmap)
2215 return 0;
2216
2217 for (attr = attribList; *attr; attr++) {
2218 switch (*attr) {
2219 case GLX_TEXTURE_FORMAT_EXT:
2220 attr++;
2221 switch (*attr) {
2222 case GLX_TEXTURE_FORMAT_NONE_EXT:
2223 case GLX_TEXTURE_FORMAT_RGB_EXT:
2224 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2225 format = *attr;
2226 break;
2227 default:
2228 /* error */
2229 return 0;
2230 }
2231 break;
2232 case GLX_TEXTURE_TARGET_EXT:
2233 attr++;
2234 switch (*attr) {
2235 case GLX_TEXTURE_1D_EXT:
2236 case GLX_TEXTURE_2D_EXT:
2237 case GLX_TEXTURE_RECTANGLE_EXT:
2238 target = *attr;
2239 break;
2240 default:
2241 /* error */
2242 return 0;
2243 }
2244 break;
2245 case GLX_MIPMAP_TEXTURE_EXT:
2246 attr++;
2247 if (*attr)
2248 mipmap = 1;
2249 break;
2250 default:
2251 /* error */
2252 return 0;
2253 }
2254 }
2255
2256 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2257 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2258 &value, GL_TRUE) != Success
2259 || !value) {
2260 return 0; /* error! */
2261 }
2262 }
2263 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2264 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2265 &value, GL_TRUE) != Success
2266 || !value) {
2267 return 0; /* error! */
2268 }
2269 }
2270 if (mipmap) {
2271 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2272 &value, GL_TRUE) != Success
2273 || !value) {
2274 return 0; /* error! */
2275 }
2276 }
2277 if (target == GLX_TEXTURE_1D_EXT) {
2278 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2279 &value, GL_TRUE) != Success
2280 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2281 return 0; /* error! */
2282 }
2283 }
2284 else if (target == GLX_TEXTURE_2D_EXT) {
2285 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2286 &value, GL_TRUE) != Success
2287 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2288 return 0; /* error! */
2289 }
2290 }
2291 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2292 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2293 &value, GL_TRUE) != Success
2294 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2295 return 0; /* error! */
2296 }
2297 }
2298
2299 if (format || target || mipmap) {
2300 /* texture from pixmap */
2301 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2302 }
2303 else {
2304 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2305 }
2306 if (!b) {
2307 return 0;
2308 }
2309
2310 return pixmap;
2311 }
2312
2313
2314 static void
2315 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2316 {
2317 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2318 if (b)
2319 XMesaDestroyBuffer(b);
2320 /* don't destroy X pixmap */
2321 }
2322
2323
2324 static GLXPbuffer
2325 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2326 const int *attribList )
2327 {
2328 XMesaVisual xmvis = (XMesaVisual) config;
2329 XMesaBuffer xmbuf;
2330 const int *attrib;
2331 int width = 0, height = 0;
2332 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2333
2334 (void) dpy;
2335
2336 for (attrib = attribList; *attrib; attrib++) {
2337 switch (*attrib) {
2338 case GLX_PBUFFER_WIDTH:
2339 attrib++;
2340 width = *attrib;
2341 break;
2342 case GLX_PBUFFER_HEIGHT:
2343 attrib++;
2344 height = *attrib;
2345 break;
2346 case GLX_PRESERVED_CONTENTS:
2347 attrib++;
2348 preserveContents = *attrib; /* ignored */
2349 break;
2350 case GLX_LARGEST_PBUFFER:
2351 attrib++;
2352 useLargest = *attrib; /* ignored */
2353 break;
2354 default:
2355 return 0;
2356 }
2357 }
2358
2359 /* not used at this time */
2360 (void) useLargest;
2361 (void) preserveContents;
2362
2363 if (width == 0 || height == 0)
2364 return 0;
2365
2366 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2367 /* A GLXPbuffer handle must be an X Drawable because that's what
2368 * glXMakeCurrent takes.
2369 */
2370 if (xmbuf)
2371 return (GLXPbuffer) xmbuf->drawable;
2372 else
2373 return 0;
2374 }
2375
2376
2377 static void
2378 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2379 {
2380 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2381 if (b) {
2382 XMesaDestroyBuffer(b);
2383 }
2384 }
2385
2386
2387 static void
2388 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2389 unsigned int *value )
2390 {
2391 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2392 if (!xmbuf)
2393 return;
2394
2395 switch (attribute) {
2396 case GLX_WIDTH:
2397 *value = xmesa_buffer_width(xmbuf);
2398 break;
2399 case GLX_HEIGHT:
2400 *value = xmesa_buffer_width(xmbuf);
2401 break;
2402 case GLX_PRESERVED_CONTENTS:
2403 *value = True;
2404 break;
2405 case GLX_LARGEST_PBUFFER:
2406 *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
2407 break;
2408 case GLX_FBCONFIG_ID:
2409 *value = xmbuf->xm_visual->visinfo->visualid;
2410 return;
2411 #ifdef GLX_EXT_texture_from_pixmap
2412 case GLX_TEXTURE_FORMAT_EXT:
2413 *value = xmbuf->TextureFormat;
2414 break;
2415 case GLX_TEXTURE_TARGET_EXT:
2416 *value = xmbuf->TextureTarget;
2417 break;
2418 case GLX_MIPMAP_TEXTURE_EXT:
2419 *value = xmbuf->TextureMipmap;
2420 break;
2421 #endif
2422
2423 default:
2424 return; /* raise BadValue error */
2425 }
2426 }
2427
2428
2429 static GLXContext
2430 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2431 int renderType, GLXContext shareList, Bool direct )
2432 {
2433 struct fake_glx_context *glxCtx;
2434 struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList;
2435 XMesaVisual xmvis = (XMesaVisual) config;
2436
2437 if (!dpy || !config ||
2438 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2439 return 0;
2440
2441 glxCtx = CALLOC_STRUCT(fake_glx_context);
2442 if (!glxCtx)
2443 return 0;
2444
2445 /* deallocate unused windows/buffers */
2446 XMesaGarbageCollect();
2447
2448 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2449 shareCtx ? shareCtx->xmesaContext : NULL);
2450 if (!glxCtx->xmesaContext) {
2451 _mesa_free(glxCtx);
2452 return NULL;
2453 }
2454
2455 glxCtx->glxContext.isDirect = GL_FALSE;
2456 glxCtx->glxContext.currentDpy = dpy;
2457 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
2458
2459 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
2460
2461 return (GLXContext) glxCtx;
2462 }
2463
2464
2465 static int
2466 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2467 {
2468 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
2469 XMesaContext xmctx = glxCtx->xmesaContext;
2470
2471 (void) dpy;
2472 (void) ctx;
2473
2474 switch (attribute) {
2475 case GLX_FBCONFIG_ID:
2476 *value = xmctx->xm_visual->visinfo->visualid;
2477 break;
2478 case GLX_RENDER_TYPE:
2479 if (xmctx->xm_visual->mesa_visual.rgbMode)
2480 *value = GLX_RGBA_BIT;
2481 else
2482 *value = GLX_COLOR_INDEX_BIT;
2483 break;
2484 case GLX_SCREEN:
2485 *value = 0;
2486 return Success;
2487 default:
2488 return GLX_BAD_ATTRIBUTE;
2489 }
2490 return 0;
2491 }
2492
2493
2494 static void
2495 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2496 {
2497 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2498 if (xmbuf)
2499 xmbuf->selectedEvents = mask;
2500 }
2501
2502
2503 static void
2504 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2505 unsigned long *mask )
2506 {
2507 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2508 if (xmbuf)
2509 *mask = xmbuf->selectedEvents;
2510 else
2511 *mask = 0;
2512 }
2513
2514
2515
2516 /*** GLX_SGI_swap_control ***/
2517
2518 static int
2519 Fake_glXSwapIntervalSGI(int interval)
2520 {
2521 (void) interval;
2522 return 0;
2523 }
2524
2525
2526
2527 /*** GLX_SGI_video_sync ***/
2528
2529 static unsigned int FrameCounter = 0;
2530
2531 static int
2532 Fake_glXGetVideoSyncSGI(unsigned int *count)
2533 {
2534 /* this is a bogus implementation */
2535 *count = FrameCounter++;
2536 return 0;
2537 }
2538
2539 static int
2540 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2541 {
2542 if (divisor <= 0 || remainder < 0)
2543 return GLX_BAD_VALUE;
2544 /* this is a bogus implementation */
2545 FrameCounter++;
2546 while (FrameCounter % divisor != remainder)
2547 FrameCounter++;
2548 *count = FrameCounter;
2549 return 0;
2550 }
2551
2552
2553
2554 /*** GLX_SGI_make_current_read ***/
2555
2556 static Bool
2557 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2558 {
2559 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2560 }
2561
2562 /* not used
2563 static GLXDrawable
2564 Fake_glXGetCurrentReadDrawableSGI(void)
2565 {
2566 return 0;
2567 }
2568 */
2569
2570
2571 /*** GLX_SGIX_video_source ***/
2572 #if defined(_VL_H)
2573
2574 static GLXVideoSourceSGIX
2575 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2576 {
2577 (void) dpy;
2578 (void) screen;
2579 (void) server;
2580 (void) path;
2581 (void) nodeClass;
2582 (void) drainNode;
2583 return 0;
2584 }
2585
2586 static void
2587 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2588 {
2589 (void) dpy;
2590 (void) src;
2591 }
2592
2593 #endif
2594
2595
2596 /*** GLX_EXT_import_context ***/
2597
2598 static void
2599 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2600 {
2601 (void) dpy;
2602 (void) context;
2603 }
2604
2605 static GLXContextID
2606 Fake_glXGetContextIDEXT(const GLXContext context)
2607 {
2608 (void) context;
2609 return 0;
2610 }
2611
2612 static GLXContext
2613 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2614 {
2615 (void) dpy;
2616 (void) contextID;
2617 return 0;
2618 }
2619
2620 static int
2621 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2622 {
2623 (void) dpy;
2624 (void) context;
2625 (void) attribute;
2626 (void) value;
2627 return 0;
2628 }
2629
2630
2631
2632 /*** GLX_SGIX_fbconfig ***/
2633
2634 static int
2635 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2636 {
2637 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2638 }
2639
2640 static GLXFBConfigSGIX *
2641 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2642 {
2643 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2644 }
2645
2646
2647 static GLXPixmap
2648 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2649 {
2650 XMesaVisual xmvis = (XMesaVisual) config;
2651 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2652 return xmbuf->drawable; /* need to return an X ID */
2653 }
2654
2655
2656 static GLXContext
2657 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2658 {
2659 XMesaVisual xmvis = (XMesaVisual) config;
2660 struct fake_glx_context *glxCtx;
2661 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
2662
2663 glxCtx = CALLOC_STRUCT(fake_glx_context);
2664 if (!glxCtx)
2665 return 0;
2666
2667 /* deallocate unused windows/buffers */
2668 XMesaGarbageCollect();
2669
2670 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2671 shareCtx ? shareCtx->xmesaContext : NULL);
2672 if (!glxCtx->xmesaContext) {
2673 _mesa_free(glxCtx);
2674 return NULL;
2675 }
2676
2677 glxCtx->glxContext.isDirect = GL_FALSE;
2678 glxCtx->glxContext.currentDpy = dpy;
2679 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
2680
2681 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
2682
2683 return (GLXContext) glxCtx;
2684 }
2685
2686
2687 static XVisualInfo *
2688 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2689 {
2690 return Fake_glXGetVisualFromFBConfig(dpy, config);
2691 }
2692
2693
2694 static GLXFBConfigSGIX
2695 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2696 {
2697 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2698 if (!xmvis) {
2699 /* This visual wasn't found with glXChooseVisual() */
2700 xmvis = create_glx_visual(dpy, vis);
2701 }
2702
2703 return (GLXFBConfigSGIX) xmvis;
2704 }
2705
2706
2707
2708 /*** GLX_SGIX_pbuffer ***/
2709
2710 static GLXPbufferSGIX
2711 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2712 unsigned int width, unsigned int height,
2713 int *attribList)
2714 {
2715 XMesaVisual xmvis = (XMesaVisual) config;
2716 XMesaBuffer xmbuf;
2717 const int *attrib;
2718 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2719
2720 (void) dpy;
2721
2722 for (attrib = attribList; attrib && *attrib; attrib++) {
2723 switch (*attrib) {
2724 case GLX_PRESERVED_CONTENTS_SGIX:
2725 attrib++;
2726 preserveContents = *attrib; /* ignored */
2727 break;
2728 case GLX_LARGEST_PBUFFER_SGIX:
2729 attrib++;
2730 useLargest = *attrib; /* ignored */
2731 break;
2732 default:
2733 return 0;
2734 }
2735 }
2736
2737 /* not used at this time */
2738 (void) useLargest;
2739 (void) preserveContents;
2740
2741 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2742 /* A GLXPbuffer handle must be an X Drawable because that's what
2743 * glXMakeCurrent takes.
2744 */
2745 return (GLXPbuffer) xmbuf->drawable;
2746 }
2747
2748
2749 static void
2750 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2751 {
2752 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2753 if (xmbuf) {
2754 XMesaDestroyBuffer(xmbuf);
2755 }
2756 }
2757
2758
2759 static int
2760 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2761 {
2762 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2763
2764 if (!xmbuf) {
2765 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2766 return 0;
2767 }
2768
2769 switch (attribute) {
2770 case GLX_PRESERVED_CONTENTS_SGIX:
2771 *value = True;
2772 break;
2773 case GLX_LARGEST_PBUFFER_SGIX:
2774 *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
2775 break;
2776 case GLX_WIDTH_SGIX:
2777 *value = xmesa_buffer_width(xmbuf);
2778 break;
2779 case GLX_HEIGHT_SGIX:
2780 *value = xmesa_buffer_height(xmbuf);
2781 break;
2782 case GLX_EVENT_MASK_SGIX:
2783 *value = 0; /* XXX might be wrong */
2784 break;
2785 default:
2786 *value = 0;
2787 }
2788 return 0;
2789 }
2790
2791
2792 static void
2793 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2794 {
2795 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2796 if (xmbuf) {
2797 /* Note: we'll never generate clobber events */
2798 xmbuf->selectedEvents = mask;
2799 }
2800 }
2801
2802
2803 static void
2804 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2805 {
2806 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2807 if (xmbuf) {
2808 *mask = xmbuf->selectedEvents;
2809 }
2810 else {
2811 *mask = 0;
2812 }
2813 }
2814
2815
2816
2817 /*** GLX_SGI_cushion ***/
2818
2819 static void
2820 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2821 {
2822 (void) dpy;
2823 (void) win;
2824 (void) cushion;
2825 }
2826
2827
2828
2829 /*** GLX_SGIX_video_resize ***/
2830
2831 static int
2832 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2833 {
2834 (void) dpy;
2835 (void) screen;
2836 (void) channel;
2837 (void) window;
2838 return 0;
2839 }
2840
2841 static int
2842 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2843 {
2844 (void) dpy;
2845 (void) screen;
2846 (void) channel;
2847 (void) x;
2848 (void) y;
2849 (void) w;
2850 (void) h;
2851 return 0;
2852 }
2853
2854 static int
2855 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2856 {
2857 (void) dpy;
2858 (void) screen;
2859 (void) channel;
2860 (void) x;
2861 (void) y;
2862 (void) w;
2863 (void) h;
2864 return 0;
2865 }
2866
2867 static int
2868 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2869 {
2870 (void) dpy;
2871 (void) screen;
2872 (void) channel;
2873 (void) dx;
2874 (void) dy;
2875 (void) dw;
2876 (void) dh;
2877 return 0;
2878 }
2879
2880 static int
2881 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2882 {
2883 (void) dpy;
2884 (void) screen;
2885 (void) channel;
2886 (void) synctype;
2887 return 0;
2888 }
2889
2890
2891
2892 /*** GLX_SGIX_dmbuffer **/
2893
2894 #if defined(_DM_BUFFER_H_)
2895 static Bool
2896 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2897 {
2898 (void) dpy;
2899 (void) pbuffer;
2900 (void) params;
2901 (void) dmbuffer;
2902 return False;
2903 }
2904 #endif
2905
2906
2907 /*** GLX_SGIX_swap_group ***/
2908
2909 static void
2910 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2911 {
2912 (void) dpy;
2913 (void) drawable;
2914 (void) member;
2915 }
2916
2917
2918
2919 /*** GLX_SGIX_swap_barrier ***/
2920
2921 static void
2922 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2923 {
2924 (void) dpy;
2925 (void) drawable;
2926 (void) barrier;
2927 }
2928
2929 static Bool
2930 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2931 {
2932 (void) dpy;
2933 (void) screen;
2934 (void) max;
2935 return False;
2936 }
2937
2938
2939
2940 /*** GLX_SUN_get_transparent_index ***/
2941
2942 static Status
2943 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2944 {
2945 (void) dpy;
2946 (void) overlay;
2947 (void) underlay;
2948 (void) pTransparent;
2949 return 0;
2950 }
2951
2952
2953
2954 /*** GLX_MESA_release_buffers ***/
2955
2956 /*
2957 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2958 * (a window or pixmap) prior to destroying the GLXDrawable.
2959 */
2960 static Bool
2961 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2962 {
2963 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2964 if (b) {
2965 XMesaDestroyBuffer(b);
2966 return True;
2967 }
2968 return False;
2969 }
2970
2971
2972
2973 /*** GLX_MESA_set_3dfx_mode ***/
2974
2975 static Bool
2976 Fake_glXSet3DfxModeMESA( int mode )
2977 {
2978 return XMesaSetFXmode( mode );
2979 }
2980
2981
2982
2983 /*** GLX_NV_vertex_array range ***/
2984 static void *
2985 Fake_glXAllocateMemoryNV( GLsizei size,
2986 GLfloat readFrequency,
2987 GLfloat writeFrequency,
2988 GLfloat priority )
2989 {
2990 (void) size;
2991 (void) readFrequency;
2992 (void) writeFrequency;
2993 (void) priority;
2994 return NULL;
2995 }
2996
2997
2998 static void
2999 Fake_glXFreeMemoryNV( GLvoid *pointer )
3000 {
3001 (void) pointer;
3002 }
3003
3004
3005 /*** GLX_MESA_agp_offset ***/
3006
3007 static GLuint
3008 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
3009 {
3010 (void) pointer;
3011 return ~0;
3012 }
3013
3014
3015 /*** GLX_EXT_texture_from_pixmap ***/
3016
3017 static void
3018 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
3019 const int *attrib_list)
3020 {
3021 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
3022 if (b)
3023 XMesaBindTexImage(dpy, b, buffer, attrib_list);
3024 }
3025
3026 static void
3027 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
3028 {
3029 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
3030 if (b)
3031 XMesaReleaseTexImage(dpy, b, buffer);
3032 }
3033
3034
3035 /* silence warning */
3036 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
3037
3038
3039 /**
3040 * Create a new GLX API dispatch table with its function pointers
3041 * initialized to point to Mesa's "fake" GLX API functions.
3042 * Note: there's a similar function (_real_GetGLXDispatchTable) that
3043 * returns a new dispatch table with all pointers initalized to point
3044 * to "real" GLX functions (which understand GLX wire protocol, etc).
3045 */
3046 struct _glxapi_table *
3047 _mesa_GetGLXDispatchTable(void)
3048 {
3049 static struct _glxapi_table glx;
3050
3051 /* be sure our dispatch table size <= libGL's table */
3052 {
3053 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
3054 (void) size;
3055 assert(_glxapi_get_dispatch_table_size() >= size);
3056 }
3057
3058 /* initialize the whole table to no-ops */
3059 _glxapi_set_no_op_table(&glx);
3060
3061 /* now initialize the table with the functions I implement */
3062 glx.ChooseVisual = Fake_glXChooseVisual;
3063 glx.CopyContext = Fake_glXCopyContext;
3064 glx.CreateContext = Fake_glXCreateContext;
3065 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
3066 glx.DestroyContext = Fake_glXDestroyContext;
3067 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
3068 glx.GetConfig = Fake_glXGetConfig;
3069 /*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/
3070 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
3071 glx.IsDirect = Fake_glXIsDirect;
3072 glx.MakeCurrent = Fake_glXMakeCurrent;
3073 glx.QueryExtension = Fake_glXQueryExtension;
3074 glx.QueryVersion = Fake_glXQueryVersion;
3075 glx.SwapBuffers = Fake_glXSwapBuffers;
3076 glx.UseXFont = Fake_glXUseXFont;
3077 glx.WaitGL = Fake_glXWaitGL;
3078 glx.WaitX = Fake_glXWaitX;
3079
3080 /*** GLX_VERSION_1_1 ***/
3081 glx.GetClientString = Fake_glXGetClientString;
3082 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
3083 glx.QueryServerString = Fake_glXQueryServerString;
3084
3085 /*** GLX_VERSION_1_2 ***/
3086 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
3087
3088 /*** GLX_VERSION_1_3 ***/
3089 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
3090 glx.CreateNewContext = Fake_glXCreateNewContext;
3091 glx.CreatePbuffer = Fake_glXCreatePbuffer;
3092 glx.CreatePixmap = Fake_glXCreatePixmap;
3093 glx.CreateWindow = Fake_glXCreateWindow;
3094 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
3095 glx.DestroyPixmap = Fake_glXDestroyPixmap;
3096 glx.DestroyWindow = Fake_glXDestroyWindow;
3097 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
3098 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
3099 glx.GetFBConfigs = Fake_glXGetFBConfigs;
3100 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
3101 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
3102 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
3103 glx.QueryContext = Fake_glXQueryContext;
3104 glx.QueryDrawable = Fake_glXQueryDrawable;
3105 glx.SelectEvent = Fake_glXSelectEvent;
3106
3107 /*** GLX_SGI_swap_control ***/
3108 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
3109
3110 /*** GLX_SGI_video_sync ***/
3111 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
3112 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
3113
3114 /*** GLX_SGI_make_current_read ***/
3115 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
3116 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
3117
3118 /*** GLX_SGIX_video_source ***/
3119 #if defined(_VL_H)
3120 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
3121 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
3122 #endif
3123
3124 /*** GLX_EXT_import_context ***/
3125 glx.FreeContextEXT = Fake_glXFreeContextEXT;
3126 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
3127 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
3128 glx.ImportContextEXT = Fake_glXImportContextEXT;
3129 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
3130
3131 /*** GLX_SGIX_fbconfig ***/
3132 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
3133 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
3134 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
3135 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
3136 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
3137 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
3138
3139 /*** GLX_SGIX_pbuffer ***/
3140 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
3141 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
3142 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
3143 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
3144 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
3145
3146 /*** GLX_SGI_cushion ***/
3147 glx.CushionSGI = Fake_glXCushionSGI;
3148
3149 /*** GLX_SGIX_video_resize ***/
3150 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
3151 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
3152 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
3153 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
3154 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
3155
3156 /*** GLX_SGIX_dmbuffer **/
3157 #if defined(_DM_BUFFER_H_)
3158 glx.AssociateDMPbufferSGIX = NULL;
3159 #endif
3160
3161 /*** GLX_SGIX_swap_group ***/
3162 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
3163
3164 /*** GLX_SGIX_swap_barrier ***/
3165 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
3166 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
3167
3168 /*** GLX_SUN_get_transparent_index ***/
3169 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
3170
3171 /*** GLX_MESA_copy_sub_buffer ***/
3172 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
3173
3174 /*** GLX_MESA_release_buffers ***/
3175 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
3176
3177 /*** GLX_MESA_pixmap_colormap ***/
3178 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
3179
3180 /*** GLX_MESA_set_3dfx_mode ***/
3181 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
3182
3183 /*** GLX_NV_vertex_array_range ***/
3184 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
3185 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
3186
3187 /*** GLX_MESA_agp_offset ***/
3188 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
3189
3190 /*** GLX_EXT_texture_from_pixmap ***/
3191 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
3192 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
3193
3194 return &glx;
3195 }